Untangle Dropping Packets

[JoelM]

I have been having random network issues at 2 clients. Both have Untangle routers. Both are updated to the latest version. They are dropping internet randomly. They have different internet providers. One on fiber and one on cable.
I have been running ping tests for the last few weeks. Internally they don't loose packets pinging different machines. However they both show dropped packets pinging to the Untangle unit itself.
They are both on battery backup units. They don't loose a lot of packets to the Untangle router but it's local so I feel they should loose no packets. They loose no packets to other equipment on the same switch.
They both loose more packets of course pinging to the gateway ip set for their static WAN which of course is the first hop outside the building I can ping. Is anyone else seeing anything? Have you tried running a ping test against your untangle router internally on your network for perhaps a week and see if you loose packets internally? It makes me wonder if the internet issues are internal to the Untangle unit. If I was loosing no packets to it I would then entirely blame internet providers but now I can't be sure.

 

[Markverhyden]

I've got one so I'll fire up a ping test this afternoon. What is the exact command/app you're using so I can replicate that. Just want to make sure I'm replicating what you're doing.

 

[Sky-Knight]

No one else can help you, the mess you're in is unique and your own. Suggestions are the best you can get... because this one is thorny.

Frame loss is also absolutely normal on any network, regardless of class or scope. And when working with any UTM, if it gets busy it will drop frames. If you're on the edge of what your hardware can do, Untangle will likely drop frames in the early hours of the morning when it runs reports. This time is slightly variable however, but should be around 1am.

What your describing could be an ISP issue, it could also be a cable issue, or even... it could be a you've outgrown your hardware issue.

Also, latest version isn't specific enough, there are THREE "latest" versions in circulation at the moment. v15.1.2, v16.0.1, and v16.1. But all of them are on the same base OS, and likely to have the same sort of issues with network interfaces...

 

[JoelM]

I've got one so I'll fire up a ping test this afternoon. What is the exact command/app you're using so I can replicate that. Just want to make sure I'm replicating what you're doing.

I'm just running from a windows command prompt:

ping 192.168.2.1 -t (the ip address of the Untangle router)

 

[Markverhyden]

I'm just running from a windows command prompt:

ping 192.168.2.1 -t (the ip address of the Untangle router)

V15.1.2 1200 packets. Zero packet loss. Like @Sky-Knight mentioned these things are highly situational.

 

[Sky-Knight]

Beware, Windows based machines make poor test subjects, as they usually have crap NICs in them which bog down for a ton of reasons. Double true if testing over a wifi interface. Linux on the same platform is slightly more reliable... but only if you contain what's running.

Still, you're right you shouldn't be seeing much in the way of frame or packet loss pinging an internal IP address.

 

[SAFCasper]

Try this tool - https://axence.net/en/axence-nettools

Really good for monitoring response times and packet loss. You can setup several monitors such as Server, Switch, Router, 8.8.8.8, 1.1.1.1 etc and run them simultaneously. It measures response time & packet loss and will give you some graphs of 1h, 1 day, 7 day etc which is useful for spotting patterns.

I'm not familiar with Untangle but is there any in-built diagnostic? It would be interesting to see if a ping running directly from Untangle also drops packets. Maybe you can SSH in and run a ping from the terminal?